[crazy longhorn]

I dont have a Skip White, I run an MSD street fire(looks to be about the same , but made my wallet hurt more). At any rate, what I have seen on MOST of the HEI distib's is that with the stock weights/center , they run about 20 degrees mecanical advance(@ the crankshaft). If you set the initial @ 12-14 degrees, you will total @ 32-34 (my 383 like 34 degrees). Most of the aftermarket weights (Mr G, Moroso, MSD, ect) have lighter weights/springs than the stock pcs.....the lite weight spring combo makes it harder to get the proper "all in spot" , and still keep the timing steady@ idle, & also return to your static idle timing @ idle. I like to run the stock weights, with a crane spring combo(blue/silver, or blue/yellow) for the proper "all in " point. You can get an adjustable Crane advance kit for around 25 bones,with springs, or if you dont need the vac can you might find someone that has some extra springs just collecting dust. (I might if I do some diggin). I run 34 total on my 383(9.8,alum heads), + 10 in the can (@ the crank).....some will tolerate more vac advance , depending on the combo. best of luck,crazyL